80 entries under harsh topic. ×

16
severe(adjective, clear, strong, hard, tough)
15
hard-nosed(adjective, mean, clear, strong, hard)
14
dogged(adjective, mean, hard, tough, firm)
14
stern(adjective, hard, tough, severe, rough)
12
intractable(adjective, hard, tough, rough, firm)
12
remorseless(adjective, tough, resist, cruel)
10
resolved(adjective, strong, severe, flat, firm)
10
strict(adjective, strong, hard, tough, severe)
8
rigorous(adjective, strong, hard, tough, severe)
8
unflinching(adjective, strong, flat, firm)
7
headstrong(adjective, hard, tough, rough)
7
ruthless(adjective, hard, rough, cruel)
6
callous(adjective, hard, tough, rough)
6
cruel(adjective, strong, hard, tough, severe)
6
flinty(adjective, close, strong, hard, tough)
6
inhuman(adjective, cruel, determined, fierce)
6
merciless(adjective, hard, rough, cruel)
6
refractory(adjective, hard, tough, rough, firm)
6
undeviating(adjective, strong, flat, certain)
5
austere(adjective, strong, hard, tough, severe)
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APASmart Define. (2016). unbending thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/unbending/thesaurus/synonyms
ChicagoSmart Define. 2016. "unbending thesaurus" https://smartdefine.org/unbending/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, unbending thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/unbending/thesaurus/synonyms>.
MLASmart Define. "unbending thesaurus" 24 March 2016. Web. 29 September 2026. <https://smartdefine.org/unbending/thesaurus/synonyms>